Collection: Transfer Pumps

Choosing the right transfer pump depends on what you're moving and where. Utility pumps from Johnson Pump and Rule handle general water transfer tasks, with flow rates ranging from around 5.5 GPM up to 7,700 GPH for high-volume jobs. Whale's submersible galley pumps are built for freshwater service aboard, while GROCO's gear pumps, with their 3/4" NPT ports, suit fluid transfer where controlled, reversible flow matters. For oil changes, Albin Group and Jabsco each offer dedicated solutions, including gear pump kits and flat-tank oil changers that make engine maintenance cleaner and simpler. Most pumps in this category run on 12V DC, though some Albin Group oil change kits are available in 24V, so confirm your vessel's electrical system before ordering.

Before buying, consider the application carefully. Submersible pumps like those from Whale and Rule's Evacuator line are designed to sit in the fluid, while inline pumps such as the Rule iL500 Plus mount into a plumbing line. Check flow rate against your actual need, since a small galley pump and a high-volume utility pump are very different tools. Port size and hose compatibility also matter, particularly with GROCO's threaded fittings. Outdoors Marine stocks genuine products from all six brands here, each sold as an authorized dealer with full manufacturer warranty coverage.